I experimented preparing of jam with star fruit ,it was sour sweet n yummy which children love with bread/dosas/rotis or even puris..
Star fruit - 1 cup
Chopped into pieces
Sugar 1 cup
for more sweetness 2 cups totally
Ghee 2to 3 tsp
Take 1 cup of chopped starfruit pieces and grind it into a paste,(do not add water),as the fruit itself has a lot of juice init.Place a microwave safe bowl and place 1 tsp of ghee in it,thenafter heat in a microwave for 30 seconds.
Then remove it outside and add the starfruit pulp/paste and microwave for 2 min in high.
Then remove it outside and add sugar and again microwave it for 6 min.Mean while mix it for every 2 minutes.
Then remove from microwave mix well and add 1 tsp of ghee.Then micro wave it for 3 minutes in 40%(360)
Remove and mix well,and microwave it at 20% for 2 min.
Remove it from oven and mix well..
Totally it takes 13 minutes..
If u add more sugar microwave it for another minute more..